Reinforced concrete.



G. ALLEN. BEINFOUBD GONGRETE. APPLICATION FILED JULY 21, 1909.

Patented Aug. 2, 1910.

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/Jl "I 7 G. ALLEN.

REINFORGHD CONCRETE. APPLICATION FILED JULY 21, 1909.

Patented Aug. 2, 1910.

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TED STAT-ns GLENN ALLEN, OF SAN FRANCISCO, CALIFORNIA,

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REINFORCED CONCRETE.

Specification of Letters latcnt.

Patented Au". 2, 1910.

Application lcd- July 21', 1909. Serial No. 508,727.

To all whom it may concern.' A

VBe it known that I, GLENN ALLEN, a citi-l zen of the United States, 'residingl at San Ifrancisco, in the county of San Francisco and, State of California, have invented a newl and useful Reinforced Concrete, of which the following is a specification.

`This invention relates to reinforced concreteV construction, andthe object of the invention is to provide a reinforcement which may be fitted together Without the use of rivets, bolts or wires, and which when in position will possess great strength and afford a firm anchorage for the concrete'.

With this object in view the invention consists primarily in the provision of reinforc ving 'elements and connecting or tie rods which are constructed to form an interlocking engagement with the said reinforcing elements. The invention also consists in certain novel features. of construction and-arrangement of. parts, all ofwhich will be hereinafter fully described and pointed out in the claims. v

In the annexed drawings, whichfully illustrate my invention, Figure l is a horizontal sectional view of a concrete wall with a concrete meeting wall or partition showing my` improved reinforcement in position therein. Fig. 2 is a similar view showing a corner which is constructed to present a column. Fig. 3 is a vertical sectional view showing a -cornice with my improved'reinforcement applied thereto. Fig. fl is a vertical Asectional view illustrating a girder and windbracing connecting the girder with an outside wall. Fig. 5 is a transverse section of a gil-der or beam. Figs. 6 and 7 are detail perspective views showing different forms of the reinforcing elements, and Fig. 8 is a detail perspective view of a portion of the connecting or tie rod.

In carrying out my present intention I employ reinforcing elements'l and 2 which are similar in Iconstruction but differ. in that the plate l is a flat plate, while the plate 2 is angular in cross section. Both the said reinforcing elements are constructed 'with key hole slots 3 and the key hole slots in the different flanges of the reinforcing` elements 2 'are arranged in alternate planes, as shown in Fig. 7, so that when the slots are engaged by the tie rods, the ends of t'he said rods may not abut against each other. The connecting or tie rod l is a bar of circular cross section having notches 5 formed in its sides at intervals throughoutits length so that the bar may be inserted through the circular portion of the key hole slots 3 in the reinforcing elements, and the notches 5 brought into ahnement with the vertical portions of the said slots, after which the tie rods may be lowered so as vlto bring the notches into engagement with the said vertical portions of the key hole slots so that the shoulders 6 presented bythe notches will engage the 'sldes of the reinforcing'elenients and thereby lock the connecting rods against lateral movement with respect to the reinforcing elements. The reinforcing elements and the tie rods being connected in the manner described and set up to form the frame of the building, the concrete is poured in around .the frame within suitable molds and will entirely envelop the frame, and. will fill the notches in the tie rods which are not in engagement with the reinforcing elements, and will also w through and fill lthe circular portions-of the key hole slots in the said reinforcing elements, the result being that the concrete lling will be firmly anchored to the frame at a large number of points throughout the same so that the desired tensile strength will be imparted to the structure, and the concrete firmly held to the frame.

In the drawings, I have illustrated Several applica-tions of the invention in order that the advantages of the same may be thorough-ly appreciated. In Fig. l a wall 7 with a partition 8 is illustrated, vand it will be observed that theliat reinforcing elements l are arranged at intervals along the wall, and the reinforcing elements of angular cross section, denoted by the numeral 2 are arranged at the meeting points of the wall and partition so that the tie rods 4, when connected to the reinforcing elements, will extend longitudinally of both the wall and the l'aartition.4 It will Vbe readily observed from the said figure that the concrete will enter and vlill the notches 5 of the tie `rods so that the tie rods will be firmly embeddedv in the concrete and will ee'ctually support the same. In Fig. 2 a similar arrangement of the reinforcing elements and tie rods is illustrated with the addition of reinforcing elements-of angular cross section disposed a short distance from the cornerof the building and connected by tie rods extending inwardly from the outer faces of thewall so as to engage an inside reinforctached columns inay'be constructed in thev saine manner.

When the upper portion of the building is being constructed and acornice is to be formed the ends of soine of the horizontally disposed reinforcing elen'ients are extended outward beyond the line of the building. as indicated at 1l in Fig. 3, and a` reinforcing element is disposed diagonally between `this extended. portion 11 and the adjacent vertical reinforcing element so'as to constitute a brace, as will be readily understood. These several parts are j'oiued by tie rods 13, as Will be readily understood, and the cornice structure will be formed around the same, as shown at 1i in said Fig.

.ln constructing large buildings, it is desirable to supply Wind bracings in the connection ef the outside wall and the girders of the building, and to eli'ect this result l employ the arrangement. shown in Fig'. 4t. The outside Wall 15 will be provided with pairs of vertical reinforcing elements 1G which will be connected both transversely and longitudinally'by tic rods l? and the horizon-tally disposed reinforcing elements 18 of `the girder will bc extended into the outside Wall and connected to thev vertical reinforcing elements of the Wall, as clearly shown at Eraces 20 and 21 will be secured to these reinforcing elements '1S by means of'tie rods and will be carried diagonally outward, and downward and upward respectively into the outside Wall and there connected to 'theA vertical reinforcing elements 16, as clearly shown. An additional brace 23 will be arranged within the girder -and Will extend between-the reinforcing eleinents 18 of'thesaine, the outer end of the said brace being connected to the upper reinforcing element 1S at the same.

point where the Abrace S20 is connected, it bc- I ing understood that the braces are of the saine construction as the reinforcing elements and are iitted in position by means of tie rods in thesalne manner.

In Fig. i have illustrated the manner of reinforcing a large girder which consists in.

disposing a series Aof reinforcing" elements Q4 vertically Within the girdcr and another outer reinforcing element 25 horizontally Within the girder, these reinforcing elements being connected by transverse tie rods 26, as shown and as Willbereadily understood.

It willreadily be seen from the foregoing' description, taken 1n connection with the accompanying drawing that I have provided a reinforced concrete construction in which the metallic reinforcementl Will be firmly fitted together without the use of `any rivets or bolts or Wiring and in which the parts may be rapidly joined together and Willprovide an extensive and strong anchorage for the ctnicrete7 the arrangement and construction eifecting a saving oflabor and expense in construction. The parts of the reinforcement cannot be disengaged while the concrete isbeing filled in around the saine' and,

consequently, reinforcing of the structure 'will be uniforinthroughout. rihe 'provision of the key hole slots in the reinforcing elements and the notches in the sides of the tie rods perniit the same to be used-in any dcsired numbers and at regular or irregular intervals as may be necessary' to conform to the plan of the building so that it will not be necessary to provide a` specialv construetion of the reinforcenlient in order to `accommodate various Window openings or Acolunins of different size or some peculiar arrangement ofthe girders and beams.y The bent or reinforcing elements edectually hold together the tie'rods-of'ineeting Walls and partitions or columns, as Will be readily understood, and )vind bracing, cornices and other parts of the building mayqall be constructed rapidly Without any sacrifice of the lateral strength.

lflaving thus described niy invention, what claini is: f

l. The combination with reinforcing elements of angularcross section provided With key-hole slots in both flanges, the slots in one ilange registering with the spaces between the slots in the other flange, of tie rods circular in cross section inserted through the said key-hole slots and provided'in their sides with notches adapted to engage the straightportions of the `key-hole slots.

E2. The combination with reinforcing ele- Inents provided with key-hole slots,A of tie rods circular in cross ,section inserted through said slots and provided on theirl sides with straight lWalled notches adapted in the presence of two Witnesses.

GLENN ALLlilN.vv

Witnesses: i

C. S. MARSHALL, Louis K. HAGENKAMP.

ion 

